Web roll support for corrugated paperboard machines



March 28, 1950 F. H. BEINJAMIN 2,501,985

WEB ROLL SUPPORT FOR CORRUGATED PAPERBOARD MACHINES Filed July 2, 1947 I4; Sheets-Sheet 1 Filed July 2, 1947 March 28, 1950 I BENJAMIN 2,501,985

WEB ROLL SUPPORT FOR CORRUGATED PAPERBOARD MACHINES l Sheets-Sheet 2March 28, 1950 F. H. BENJAMIN 2,501,985

WEB ROLL SUPPORT FOR coliRuATEn PAPERBOARD MACHINES Filed July 2, 1947 g4 Sheets-Sheet :5

March, 28, 1950." F. H. BENJAMIN 2,501,985

' WEB ROLL SUPPORT FOR CORRUGATED PAPERBOARD MACHINES Filed July 2, 1947v 4 Sheets-Sheet 4 k ng , m luam @fww Patented'MarQ- IQSU y l -2,5 01,9sum'reo ,s'rA'res PATENT orrica aromas WEB ROLL SUPPORT FOR CORRUGATEDPAPERBOABD MACHINES I Fred 11. Benjamin, Wexford, re, minorto F. J.

Kress Box Company, Pit

ration of Pennsylvania.

Application July 2, 1947, Serial No. 758,870

. 11 Claims. (cl. 242-58) This invention relates to supports for webrolls, more particularly the rolls of paper that are fed into corrugatedpaperboard making machines.

In supplying paper web to a corrugated paperboard machine, it is generalpractic to pass a metal shaft through the core hole of a web roll andthen to drive wedges, that are slidably mounted on the shaft, into theends of the core hole to center the shaft in the roll. The wedges thenare locked on the shaft so that the roll can not turn independently ofthe shaft. The roll then must be run into unwinding position at one endof or under the machine ready to take the place of another roll as soonas the latter is exhausted. The'ends of the shaft are mounted in crudebearings, and a brake is applied to one end of the shaft to control thetension on the paper being unwound from the roll. All of this workrequires a considerable amount of time and heavy manual labor. Theshafts sometimes become bent, and the inner wraps of the paper aredamaged by the wedges cutting into them. Furthermore, the overall lengthof the machine is considerable because there must be room to receive webrolls moved axially into position beside their bearings before the rollscan be moved radially into the bearings. This system also means that thefloor around the machine often is cluttered up with shafts and wedgesand the tools used for driving them in place. v

To eliminate some of these disadvantages, it has been proposed that therolls be raised into position between a pair of chucks mounted onsupporting stands in line with the machine, but

the construction of such apparatus has been complicated and such thatboth chucks have to be inserted in a roll simultaneously. This requiresaccurate alignment of the roll between the chucks, which is difiicult toobtain, and it also requires the work to be done in a location wherethere is little room to work. The chuck supports have been connectedtogether in various ways, and the rolls have been held on the chucks bythe wedging pressure of the chucks against the outer ends of the coreholes, thereby often damaging the ends of the rolls. There has been nosatisfactory provision for adjusting the position of a roll when one endof it is wound tighter than the other.

It is among the objects of this invention to i supporting stands, whichallows one end of a roll at a time to be moved onto a chuck, which usesthe roll as the only means for connecting the stands together, which hasexpanding chucks aisle at one side of the machine.

tlburgh; Pa a corpoof large roll-engaging areas, which haschucksthat arelaterally adjustable and self-aligning on their stands, which does notdamage the rolls, which prevents telescoping of rolls, which reduces thelength of the machine with which it is used, and which is used with anunobstructed floor.

In accordance with this invention, a pair of unconnected stands aremounted for travel along a track extending across a corrugatedpaperboard machine or the like and laterally into a loading I A chuck ismounted on each stand and has inwardly projecting expansible portionsadapted to project into the opposite ends of the core hole of a web rollthat is placed between the chucks while they are in the loading aisle.Means are provided for expanding the chucks to grip the inside of theroll and to support it so that the two chucks will be connected by theroll and will be movable as a unit along the track from the loadinposition in the aisle to the unwinding position under the machine. Alook may be connected to one of the stands for holding it in anydesiredposition along the track. The track preferably has its upper surfacesubstantially flush with the level of the floor. Each chuck includes ahousing slidably and rotatably seated on its stand, and a horizontalhollow arbor rotatably mounted in the housing. A wedge is slidablymounted in the arbor and has a projecting tapered end around which thereis a plurality of segmental members which are slidably connected to thearbor so that they can be expanded in a web roll when the wedge is movedinward. A cheek plate is secured to the inner end of the arbor aroundthe segments for engaging the adjoining nd of the web roil supported bythe two chucks.

The preferred embodiment of the invention is illustrated in theaccompanying drawings, in which Fig. 1 is a perspective view of one ofmy web roll supports in leading position and another of them inunwinding position at on end of a corrugated paperboard machine; Fig. 2is a view of the inner side of one of the stands with the chuckcollapsed and with the track in cross section; Fig. 3 is a side view ofthe stand with the chuck expanded; Fig. 4 is an enlarged verticalsection of a chuck taken on the line IVIV of Fig. 2; and Fig. 5 is anenlarged horizontal section taken on the line V-V of Fig. 2.

Indicated in Fig. 1 of the drawings is one end of a corrugatedpaperboard machine to which a web I of paper is bein delivered from aroll 2 mounted in one of my web roll supports. Another roll I is aboutto be mounted in a like support temporarily located in the aisle besidethe machine. When loaded, this roll will be moved under the web Ileaving the first roll so that the second roll will be ready to feedpaper into the machine as soon as the first roll has been exhausted. Thetwo web roll supports are identical and, as shown, are disposed paralleland close to each other. One of these supports now will be described.

Starting at the bottom, a track is mounted in the floor and extends froman unwinding position in line with the machine laterally into theloading aisle. As shown in Fig. 2, the track consists of a pair ofhollow rails 4, each including a pair of spaced parallel channels 6connected at their bottoms by cross rods I and embedded in the floor 8above a well 9 into which foreign matter that otherwise might accumulatein the track may fall. Inserted between these two channels is anotherpair of channels H having their flanges fac' ig inward. The webs ofthese channels engage the webs of the outer channels. The inner channelsare spaced apart a short distance by angle bars 12 welded to their lowerflanges. Welded to the top of the inner channels are flat plates i3 thatrest on top of the outer channels. The upper surfaces of these platesare flush with the surface of the floor so that the track forms neithera projection nor a depression that might cause someone to fall.

Above the track there is a pair of stands, each of which has ahorizontal base plate l6 supported by heavy vertical plates l1 securedto its opposite sides and extending down through the slots in the rails.Extending through the opposite ends of the plates inside the rails areshort shafts l8 on the ends of which are mounted wheels 19 that travelin the inner channels H of the rails so that the stand' can be rolledalong the track. Mounted on the base of each stand is a pedestal formedfrom a vertical center plate 2|, parallel side plates 22, and ahorizontal top plate 23. This pedestal is braced by vertical triangularplates 24, and by inclined plates 25 extending from side plates 22 tothe tops of the vertical plates I! that extend into the rails.

One of the stands is provided with a look so that it can be held in anydesired position along the track. As shown in Fig. 3, the lock includesa pair of clamping shoes 21 and 28, one engaging top plates l3 of a rail4 and the other located by a pair of narrower bars 43. All of these barsare connected by bolts 44 to the top plate of the stand. Secured to thebottom of the housing by means of screws 46 are a pair of plates 41 and48, one of which engages the inner edges of the upper bars 42 and theother of which engages the inner edges of lower bars 43. As the lowerplate projects beneath the upper bars, it locks the housing to thestand. However, the plates are slidable lengthwise of the bars toprovide for lateral adjustment of the housing on the stand, and, asshown in Fig. 5, the plates are tapered toward their opposite ends sothat the housing can turn on a vertical axis for self-alignment purposesto be described later. Lateral adjustment of the housing is efiected bymeans of horizontal screws 49 threaded in blocks ill disposed betweenthe ends of the bars and bolted to the top plate of the stand. Byloosening either screw and tightening the other, the housing can bepushed across the stand.

Rotatably mounted in suitable thrust and radial bearings in housing 4|is a horizontal hollow arbor 52 on the outer end of which a heavy ring53 is rig-idly mounted. Secured to the outer face of this ring is anannular plate 54 that holds in place an internally threaded sleeve 56which can be turned in the ring by means of a hand wheel 51 directlybelow the top flanges of inner channels I l The lower shoe is supportedby a hand screw 29 that is threaded in it and that extends up throughthe upper shoe and a metal block 30 secured to the upper shoe. When thescrew is turned in one direction, the lower shoe is drawn up tightagainst the rail flanges so that the rail is clamped between the twoshoes. Block 30 is attached to the outer end of a threaded horizontalshaft 32 that is slidably mounted in a sleeve 33 secured to the side ofthe stand. This sleeve is divided into two parts separated by a groovedwheel 34 that is threadedly mounted on the screw between them. Anendless belt 36 extends around this wheel and a similar wheel mounted ina bracket 31 attached to the upper part of the stand. This second wheelcan be turned by a hand wheel 28, so that after the brake has beenlocked on the rail in a desired location, the grooved wheel 34 on thestationary threaded shaft 32 can be rotated in order to move the standforward or backward a short distance on the track to provide fineadjustment of the stand. In this way the web roll can be aligned veryaccurately with the machine.

Supported by each stand is a chuck housing 4| that, as shown in Fig. 4,rests on parallel bars 42 extending along the inner and outer edges ofpedestal plate 23 from which they are spaced on the outer end of thesleeve. Slidably mounted in the arbor is a plug 54, the outer endportion of which is threaded in the sleeve. The inner end of the plugprojects from the arbor and is tapered, preferably being provided withtour tapered flat surfaces so that it is square in cross section.

Four segmental wedging members 58 are disposed around the tapered end oftheplug, each segment having a longitudinally inclined flat innersurface slidably engaging one of the flat surfaces of the wedge. Whenthp segments are collapsed, their outer surfaces form a cylinder with atapered inner end. This and is provided with an annular groove in whichan endless coil spring Si is disposed for drawing the segments towardone another. The outer ends of the segments are provided with radialextensions 42 which are retained slidably in a radial recess 63 formedbetween a ring 64 rigidly mounted on the inner end of the arbor and avertical cheek plate 6Q encircling the segments. Each segment extension59 is provided with a radial slot 51 through which loosely extends oneof the screws 68 that help connect the cheek plate to the adjoiningring. The extensions are encircled by an endless coil spring 69 thaturges the segments radially inward toward one another. The cheek platesinner surface that forms one wall of recess 83 is inclined and engagescorrespondingly inclined surfaces on the segment extensions so that whenthe segments are forced apart or expanded by axial movement of thewedge, those sliding surfaces draw the segments toward the arbor. Whenthe wedge is withdrawn by turning hand wheel 51 in the oppositedirection, the contraction of springs GI and 59 causes the segments toslide toward the point of the wedge as they collapse. The segments maybe provided with shallow arcuate grooves to form teeth ill for bettergripping of the web roll in which the segments are inserted.

sure against the brake drum can be adjusted. When the screw is loosened,the bands are swung away from the drum by means of coil springs Itencircling the screw and compressed between the bands and a bracket 19projecting from the chuck housing. a

In using the apparatus. after a roll of paper has been unwound from thepair of stands that supported it they are pushed along the track untilthey are out in the aisle at one side of the machine, as shown in Fig.l. A new roll of paper then is carried into the aisle. such as by atraveling overhead hoist ll or other suitable device.

and the roll is suspended between the two stands with its core hole on alevel with the segments 59 of the chucks, which have been collapsed inthe meantime. The stand which carriesthe track clamp (the left-handstand in Fig. 1). is pushed toward the roll to insert its chuck segmentsin the adjacent end of the roll.- While the cheek plate 66 is beingpushed tightly against the end of the roll, the chuck is expandedagainst the inside of the roll by turning hand wheel 57. As soon as thechuck segments irictionally engage the inside of the roll, their furtherexpansion will cause the engaging inclined surfaces of segmentextensions 62 and the.cheek plate to draw the cheek plate and roll morefirmly against each other. The track clamp then is tightened by turninghand screw 29.

The other stand then is moved toward the opposite end of the roll toinsert its chuck in the roll. To align this chuck with the core hole,the roll can be swung to the left or right, using the other chuck as afulcrum. The second chuck then is expanded in the roll by the slidingplug 58.

The hoist can now be disconnected from the roll which is supported bythe two chucks and which forms the only means for connecting the stands.The track lock is released and the two stands and connecting roll arepushed along the track until they are back in their original posie tionin line with the machine. When the roll is in approximately correctposition the track lock again is set, and then hand wheel II is turnedto adjust the stands along the track the slight distance necessary toaccurately position the roll.

The tension on the paper being unrolled can be controlled by the brakeon one chuck; Also. if the roll happens to have a tight edge, this canbe compensated for by adjusting one of the chuck housings laterally byscrews 50. Although this will cause the roll to be skewed, the chuckswill not bind in the roll because they can turn 'on their stands andstay in alignment with the axis of the roll.

With this apparatus, a single hoist can be used for loading all of theroll supports. On the other hand, the lack of any base plates or otherconnections between the stands makes it possible to use a lift risingfrom floor level between the tracks and the stands. All loading is donein the aisle, so the machine can be shorter. No loose articles that mayclutter up the floor are required. This arrangement also permits theloading of rolls without having the stands in fixed position on thetracks or in a fixed relationship with each other, thereby allowing alarge latitude in positioning of the rolls to be loaded. The cheek pates tightly en-a-ing the ends of the roll and prevent its center fromtelescop ng, thus permitting better alignment of the roll as the paperruns in the machine. The engagement of the cheek plates with the ends ofthe roll also cooperates with the engagement of the chuck segments withthe inside of the roll to provide plenty of frictional engagementbetween the roll and chucks without excessive pressure again t theinside of the roll. Special diameter core holes or special cores in theholes are not needed because the adjustable chucks are infinitelyvariable in diameter between predetermined limits. The large area ofcontact between the chuck segments and the roll distributes the pressureover a large area of the paper and helps to avoid damaging the inside ofthe roll. The

expanding chucks make it unnecessary to push the stands toward the rollto hold the chucks in position. Finally this manner of loading andsupporting web rolls and the like is a time saver compared with methodsknown heretofore.

According to the provisions of the patent statutes, I have explained theprinciple and construction of my invention and have illustrated anddescribed what I now consider to represent its best embodiment. However,I desire to have it understood that, within the scope of the appendedclaims, the invention may be practiced otherwise than as specificallyillustrated and described.

Iclaim:

l. A web roll support comprising a track, a pair of unconnected standsmounted for travel along the track, a chuck mounted on each stand, the

chucks having inwardly projecting expansibleportions adapted to projectinto the opposite ends of the core hole of a web roll between the chuckstosupport it, means for expanding said portions to grip the inside ofthe roll, whereby the two chucks will be connected by the roll and willbe movable as a unit along the track from a loading position to anunwinding position, a screw slidably connected to one of the stands andextending lengthwise of the rails, a locking device connected to thescrew and adapted to be locked to the track in any desired position tohold the adjoining stand stationary, a rotatable member threaded on saidscrew and held against axial movement relative to the adjoining stand,and means for rotating said member when said device is locked on thetrack to thereby adjust the stand along said screw and track.

2. A web roll support comprising parallel hollow rails adapted to bemounted in a door with the upper surfaces of the rails in substantiallythe plane of the floor surface, each rail being provided with a slotthrough its upper portion extending lengthwise thereof, wheels rotatablymounted inside of said. rails, a pair of unconnected stands, connectingmembers extending through said slots and securing each stand to some ofsaid wheels for travel along the track, a chuck mounted on each stand,the chucks having inwardly projecting expansible portions adapted toproject into the opposite ends of the core hole of a web roll betweenthe chucks to support it, and means for expanding said portions to gripthe inside of the roll, whereby the two chucks will be connected by theroll and will be movable as a unit along the track from a loadingposition to an unwinding position.

3. The combination with a corrugated paperboard machine, of a web rollsupport comprising a track extending across the machine and out into aloading aisle at one side of the machine, a pair of unconnected standsmounted for travel along the track, a chuck mounted on each stand,

the chucks having inwardly projecting expansible said portions to gripthe inside of the roll and support it, whereby the two chucks will beconnected by the roll and will be movable as a unit along the track fromsaid aisle into unwindin position in line with the machine.

4. A web roll support comprising a track, a pair of unconnected standsmounted for travel along the track, a chuck housing slidably androtatably seated on each stand, means for adjusting the housinglaterally on the stand, a horizontal hollow arbor rotatably mounted insaid housing, a plug slidably mounted in the arbor and having a taperedinner end projecting therefrom, a plurality of segments disposed aroundsaid tapered end and slidably connected to the arbor for movementradially thereof, a cheek plate secured to the inner end of the arboraround said segments and adapted to engage an end of a web roll betweenthe two chucks while the segments project into it, and means for movingthe tapered plugs inwardly to expandthe surrounding segments in theopposite ends of the web roll to support it, whereby the two chucks areconnected by the roll and can be moved as a unit along the track.

5. A web roll support comprising a track, a pair of unconnected standsmounted for travel along the track, a chuck housing slidably androtatably seated on each stand, means for adjusting the housinglaterally on the stand, a horizontal hollow arbor rotatably mounted insaid housing, a plug slidably mounted in the arbor and having a taperedinner end projecting therefrom, a plurality of segments disposed aroundsaid tapered end and slidably connected to the arbor for movementradially thereof, a cheek plate secured to the inner end of the arboraround said segments and adapted to engage an end of a web roll betweenthe two chucks while the segments project into it, means for moving thetapered plugs inwardly to expand the surrounding segments in theopposite ends of the web roll to support it, whereby the two chucks areconnected by the roll and can be moved as a unit along the track, and abrake operatively connected to the arbor of one of said chucks.

6. A web roll support comprising a track, a pair of unconnected standsmounted for travel along the track, a chuck housing slidably androtatably seated on each stand, means for adjusting the housinglaterally on the stand, a horizontal hollow arbor rotatably mounted insaid housing, a plug slidably mounted in the arbor and having a taperedinner end projecting therefrom, a plurality of segments disposed aroundsaid tapered end and slidably connected to the arbor for movementradially thereof, a check plate secured to the inner end of the arboraround said segments and adapted to engage an end of a web roll betweenthe two chucks while the segments project into it, means for moving thetapered plugs inwardly to expand the surrounding segments in theopposite ends of the web roll to support it, whereby the two chucks areconnected by the roll and can be moved as a unit along the track, abrake operatively connected to the arbor of one of said chucks, and aclamp connected to one of the stands and engaging the track to hold thestand in any desired position along the track.

7. A web roll support comprising a stand, a chuck housing slidablymounted on the stand, horizontal screws threaded in opposite sides ofthe stand and bearing against said housing for adjusting it laterally onthe stand, a horizontal 8 l hollow arbor rotatably mounted in saidhousing, a wedge slidably mounted in the arbor and projecting therefrom,a plurality of segments disposed around the projecting portion of thewedge and slidably connected to the arbor for movechuck member rotatablymounted on a horizontal axis in said housing and a check platesurrounding said member and rotatable therewith for engaging an end of aweb roll, said housing being rotatable on said stand for self-alignmentwith the web roll.

9. A web roll support comprising a stand, spaced parallel bars mountedon top of the stand and extending laterally across it, a plate slidablymounted on the stand between said bars and having convex sides engagingthem, horizontal screws threaded in opposite sides of the stand andbearing against the ends of said plate for adjusting it laterally on thestand, a chuck housing rigidly mounted on said plate, an expansiblechuck member rotatably mounted on a horizontal axis in said housing, andmeans for expanding said member in the end of the core hole of a webroll to support it.

10. A web roll support comprising a chuck housing, a horizontal arborrotatably mounted therein, a plug slidably mounted in the arbor andhaving a tapered inner end projecting therefrom, a plurality of segmentsdisposed around said tapered end, a cheek plate connected to the innerend of the arbor around said segments and having a recess between it andthe arbor, the inner ends of the segments being provided with radialextensions projecting slidably into said recess, and means for movingthe plug axially to expand the surrounding segments in the end of a webroll.

11. A web roll support comprising a chuck housing, a horizontal arborrotatably mounted therein, a plug slidably mounted in the arbor andhaving a tapered inner end projecting therefrom, a plurality of segmentsdisposed around said tapered end, a cheek plate connected to the innerend of the arbor around said segments and having a recess between it andthe arbor, the inner ends of the segments being provided with radialextensions projecting slidably into said recess, and means for movingthe plug axially to expand the surrounding segments in the end of a webroll, said segments and cheek plate having slidably engaging inclinedsurfaces that move the segments axially of the arbor as they areexpanded, whereby the segments draw the web roll tightly against thecheek plate.

FRED H. BENJAMIN.

REFERENCES CITED UNITED STATES PATENTS Name Date Mikaelson Oct. 24, 1939Number

